High-resolution studies of M87 at long radio wavelengths

Details High-resolution studies of M87 at long radio wavelengths High-resolution studies of M87 at long radio wavelengths

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..933c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 200, Sept. 1982, p. 933-940.

Astronomy and Astrophysics

Astronomy

16

Astronomical Spectroscopy, Elliptical Galaxies, Emission Spectra, Long Wave Radiation, Radio Spectra, Spectral Resolution, Astronomical Maps, Galactic Structure, High Resolution, Low Frequencies, Radio Interferometers, Telescopes, Wavelengths

Scientific paper

Contour maps of the radio emission at 408 and 1666 MHz from the jet of M87 have been produced with the MTRLI. The structure found at long wavelengths is generally similar to that shown previously at short radio and optical wavelengths, and the map at 1666 MHz reveals that most of the knots of emission in the jet have angular sizes of around 1 arcsec. Data obtained with a single-baseline interferometer at 151 MHz have been combined with the maps to produce low-frequency spectra. These show evidence of low-frequency absorption for several of the knots, which may be produced by free-free absorption in dense, filamentary external clouds.

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